* {
    padding: 0;
    margin: 0;
}
.classTop {
    color: black;
    font-size: 24px;
    font-weight: 800;
    text-align: center;
    padding: 10px 0;
    border-bottom: 1px solid gray;
    position: relative;
    top: 0;

}
.classTop input {
    height: 30px;
    width: 280px;
    padding: 0 15px;
    border-radius: 10px;
    background-color: gainsboro;
}